Bar chart does not start at zero.

[ltonl]

anyone can help me?
I try several time to solve the problem
<img width="132" alt="screen shot 2560-10-30 at 21 11 09" src="https://user-

this is my code

func setChart(dataPoints: [String], values: [Double]) {
barChartView.delegate = self
barChartView.chartDescription?.enabled = false
barChartView.highlightPerTapEnabled = false
barChartView.drawValueAboveBarEnabled = false
barChartView.fitBars = true
barChartView.drawBarShadowEnabled = false
barChartView.drawGridBackgroundEnabled = false
barChartView.pinchZoomEnabled = false
barChartView.doubleTapToZoomEnabled = false
// barChartView.autoScaleMinMaxEnabled = true
// barChartView.scaleYEnabled = false
// barChartView.scaleXEnabled = false
barChartView.animate(xAxisDuration: 0.5, yAxisDuration: 0.5, easingOption: .easeInBounce)

    let axisMinimum = 0.0
    let axisMaximum = 3.0
    
    let rightAxis = barChartView.rightAxis
    rightAxis.enabled = false
    rightAxis.axisMinimum = axisMinimum
    rightAxis.drawAxisLineEnabled = false
    rightAxis.drawGridLinesEnabled = false
    rightAxis.drawZeroLineEnabled = true
    
    let yAxis = barChartView.leftAxis
    yAxis.enabled = false
    yAxis.axisMinimum = axisMinimum
    yAxis.spaceBottom = 0.0
    yAxis.drawAxisLineEnabled = true
    yAxis.drawGridLinesEnabled = true
    yAxis.drawZeroLineEnabled = true

    let xAxis = barChartView.xAxis
    xAxis.drawLabelsEnabled = true
    xAxis.drawAxisLineEnabled = true
    xAxis.drawGridLinesEnabled = true
    xAxis.labelTextColor = .white
    xAxis.granularity = 1.0
    xAxis.centerAxisLabelsEnabled = true
    xAxis.axisMinimum = axisMinimum
    xAxis.axisMaximum = axisMaximum
    xAxis.labelPosition = .top
    
    let legend = barChartView.legend
    legend.enabled = false
    
    var dataEntries: [BarChartDataEntry] = []
    for i in 0..<dataPoints.count {
        let dataEntry = BarChartDataEntry(x: Double(i), y: Double(values[i]), data: dataPoints as AnyObject?)
        dataEntries.append(dataEntry)
    }
            
    let chartDataSet = BarChartDataSet(values: dataEntries, label: nil)
    let chartData = BarChartData(dataSet: chartDataSet)
    chartData.setValueTextColor(NSUIColor.clear)
    barChartView.xAxis.valueFormatter = IndexAxisValueFormatter(values: dataPoints)
    barChartView.drawBordersEnabled = false
    barChartView.data = chartData

    var colors: [UIColor] = []
    colors = [zeroColor, firstColor, secondColor]
    chartDataSet.colors = colors
    chartData.barWidth = 1
}

thank for your help

[liuxuan30]

try yAxis.axisMinimum = 0 and if not work, post an image with y axis label enabled so we see where is 0.